from __future__ import annotations

import bisect

import generator.model

def column(index, time, system_start, fonts):
  position = bisect.bisect_right(index.scale_starts, time) - 1
  if position < 0:
    return []
  span = index.scale_spans[position]
  if time >= generator.model.fraction(span['end']) or time not in (system_start, index.scale_starts[position]):
    return []
  return [fonts.text(span['label'], 0, 0, 16, 'scale', (span['id'],))]